There are 12 zip codes in Whiteside County, Illinois. The most populated is 61081, located in Sterling. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON
Zip Code
Population
City
6108121,138Sterling
6107113,766Rock Falls
612707,096Morrison
612525,424Fulton
612772,978Prophetstown
612502,713Erie
612831,422Tampico
61230932Albany
61261644Lyndon
61251382Fenton
61243277Deer Grove
61037105Galt

Zip Codes in Whiteside County, Illinois by Population (2024)